Percutaneous interbody spine fusion devices, nuclear support device, spine fracture support device, delivery tools, percutaneous off-angle bone stapling/nailing fixation device and methods of use

Abstract

Percutaneous interbody spine fusion devices are provided. These devices may have a number of different designs and exemplary features. One device consists of a single rotating hollow cam cage with perforations (with or without fixation anchors) and a delivery tool. Another device consists of a counter-rotating cam cage (with or without fixation anchors) and a delivery tool. A third device consists of an expanding cam with anchors and delivery tool; this device may consist of a single expanding cam or a series of expanding cams. A delivery tool is included. A fourth device consists of a spring cage; this device may be a stand-alone device, can be combined with expanding cam device, and may be incorporated into a cage. A delivery tool is included. This spring cage may or may not have fixation anchors. A fifth device consists of a random coil support device that can be used as a nuclear or spine fracture support device; a delivery tool is included. A sixth device consists of a directional ribbon strip coil device and delivery tool. Also provided is a percutaneous off-angle bone stapling/nailing fixation device.

1 . A rotating interbody spinal fusion device comprising:
 a hollow cam shaped cylindrical body with base planar surfaces connected to expanded planar surfaces via cam surfaces;   a plurality of fenestrations along the cam body, the fenestrations extending from the exterior to the interior of the body; and   a delivery tool engagement feature for rotating the cam body.   
     
     
         2 . The device of  claim 1 , further comprising one or more protrusions extending from the cam body, the protrusions having pointed ends. 
     
     
         3 . The device of  claim 1 , wherein the cam body is tapered along the length of the body. 
     
     
         4 . The device of  claim 1  further comprising a second hollow cam shaped cylindrical body linked to the first cam body via a swivel joint to allow the first and second cams to rotate relative to each other, the second hollow cam shaped body comprising base planar surfaces connected to expanded planar surfaces via cam surfaces, a plurality of fenestrations along the length of the cam body extending from the exterior to the interior of the body, and a delivery tool engagement feature for rotating the cam body. 
     
     
         5 . The device of  claim 4 , further comprising one or more protrusions extending from the first and second cam bodies, the protrusions having pointed ends, wherein the one or more protrusions extend from the second cam body in an opposite direction to the one or more protrusions extending from the first cam body. 
     
     
         6 . The device of  claim 4 , wherein the first and second cam bodies are tapered along the length of the bodies. 
     
     
         7 . The device of  claim 1 , wherein the device is cannulated for insertion over a guide pin or a guide wire. 
     
     
         8 . An expanding intervertebral device comprising:
 two cams, each cam comprising two pin holes, a cam surface and one or more protrusions extending from cam surfaces, the protrusions having pointed ends;   an anchor rod comprising a mating hole and a threaded surface opposite the mating hole;   a pivot pin; and   a locking nut comprising an integral washer and an interior threaded surface;   wherein the pin holes of each cam are coupled to the mating hole of the anchor rod via the pivot pin and anchor rod is coupled to the locking nut via their threaded surfaces, and wherein the cams are rotated 180 degrees relative to each other when assembled.   
     
     
         9 . The device of  claim 8 , wherein the device is cannulated for insertion over a guide pin or a guide wire. 
     
     
         10 . An intervertebral device comprising a helical spring body having an inner and an outer diameter, a cross section diameter, a defined pitch length, and a defined number of turns. 
     
     
         11 . The device of  claim 10 , wherein the spring body tapers along the length of the body. 
     
     
         12 . The device of  claim 10 , wherein the inner and outer diameters are uniform along the length of the spring body. 
     
     
         13 . The device of  claim 10 , wherein the inner and outer diameters are variable along the length of the spring body. 
     
     
         14 . The device of  claim 10 , wherein the cross section diameter is non-circular. 
     
     
         15 . The device of  claim 10 , further comprising a second helical spring body disposed within the first spring body, wherein the outer diameter of the second spring body is larger than the inner diameter of the first spring body. 
     
     
         16 . The device of  claim 15 , wherein the second spring body has an opposite hand than the first spring body. 
     
     
         17 . The device of  claim 10 , further comprising an expandable, cylindrical shaped containment cage comprising two side walls having a proximal and a distal end and multiple perforations, end plates at the distal end of the side walls, and a plurality of bridging arms connecting the side walls. 
     
     
         18 . The device of  claim 10 , wherein the device is cannulated for insertion over a guide pin or a guide wire. 
     
     
         19 . An intervertebral device comprising a coil body having a defined length, a cross section diameter, a distal end and a proximal end, the distal end having a blunted shape, wherein the coil body is adapted to buckle along the length of the body when force is applied against the ends of the coil. 
     
     
         20 . The device of  claim 19 , wherein the coil body randomly buckles along the length of the coil body when force is applied against the ends of the coil 
     
     
         21 . The device of  claim 19 , wherein the coil body has a rectangular cross section and a plurality of preformed bends along the length of the body where the coil body buckles when force is applied against the ends of the coil. 
     
     
         22 . The device of  claim 19 , wherein the device is cannulated for insertion over a guide pin or a guide wire.